[Ext 4.1 beta 2a] Header right, collapse left - Problems

REQUIRED INFORMATION

Ext version tested:

Ext 4.1 beta 2a

Ext 4.1 nightly 2012-02-21

Browser versions tested against:

Chrome 18

DOCTYPE tested against:

<!DOCTYPE html>

Description:

See screenshots attached. If using headerPosition : 'right' and collapseDirection : 'left', the title and collapse icon disappear. a white box lays over the tree in the left, too. Happens on Chrome only.